scholarly journals The Variability of Protein Supplements in the Hen’s Diet in Supplying the Unidentified Factor or Factors Essential for Chick Growth

1948 ◽  
Vol 27 (4) ◽  
pp. 466-470 ◽  
Author(s):  
A.C. Wiese ◽  
C.F. Petersen ◽  
C.E. Lampman
1952 ◽  
Vol 31 (4) ◽  
pp. 700-707 ◽  
Author(s):  
D.W. Bolin ◽  
Earle W. Klosterman ◽  
Kermit Schlamb ◽  
Reece L. Bryant

1962 ◽  
Vol 41 (2) ◽  
pp. 614-620 ◽  
Author(s):  
A.A. Woodham ◽  
Ian McDonald

1946 ◽  
Vol 25 (2) ◽  
pp. 157-161 ◽  
Author(s):  
D.W. Bolin ◽  
Charlie F. Petersen ◽  
C.E. Lampman ◽  
Olof E. Stamberg

1950 ◽  
Vol 16 (4) ◽  
pp. 757-763 ◽  
Author(s):  
A. Leonard Sheffner ◽  
Joseph B. Kirsner ◽  
Walter L. Palmer

1948 ◽  
Vol 173 (1) ◽  
pp. 117-122 ◽  
Author(s):  
A.R. Robblee ◽  
C.A. Nichol ◽  
W.W. Cravens ◽  
C.A. Elvehjem ◽  
J.G. Halpin
Keyword(s):  

Author(s):  
Paulo Vitor Divino Xavier de Freitas ◽  
Patrícia Faquinello ◽  
Maura Regina Sousa Silva ◽  
Paulo Ricardo de Sá da Costa Leite ◽  
Flavia Oliveira Abrão ◽  
...  
Keyword(s):  

Nutrients ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 1227
Author(s):  
Ian Chapman ◽  
Avneet Oberoi ◽  
Caroline Giezenaar ◽  
Stijn Soenen

Protein supplements are increasingly used by older people to maintain nutrition and prevent or treat loss of muscle function. Daily protein requirements in older people are in the range of 1.2 gm/kg/day or higher. Many older adults do not consume this much protein and are likely to benefit from higher consumption. Protein supplements are probably best taken twice daily, if possible soon after exercise, in doses that achieve protein intakes of 30 gm or more per episode. It is probably not important to give these supplements between meals, as we have shown no suppressive effects of 30 gm whey drinks, and little if any suppression of 70 gm given to older subjects at varying time intervals from meals. Many gastrointestinal mechanisms controlling food intake change with age, but their contributions to changes in responses to protein are not yet well understood. There may be benefits in giving the supplement with rather than between meals, to achieve protein intakes above the effective anabolic threshold with lower supplement doses, and have favourable effects on food-induced blood glucose increases in older people with, or at risk of developing, type 2 diabetes mellitus; combined protein and glucose drinks lower blood glucose compared with glucose alone in older people.


1987 ◽  
Vol 45 (3) ◽  
pp. 345-348 ◽  
Author(s):  
E. R. Ørskov ◽  
G. W. Reid ◽  
C. A. G. Tait

ABSTRACTThirty-two Friesian cows in early lactation were divided into four treatment groups to receive ad libitum a mixed diet consisting of silage (0·70) and grain-based concentrate (0·30). Fish meal was subsequently mixed into the diet at levels of 0, 40, 80 and 120 g/kg to provide crude protein concentration (g/kg dry matter) in the complete diets of 156, 181, 200 and 212 respectively. In the 2nd week after calving the yields of fat-corrected milk (FCM) were 28·5, 29·2, 32·0 and 34·9 kg/day for the four levels respectively; at this time, food intake was sufficient only to meet the calculated energy requirement for 15 kg FCM per day. Due to recurring problems with ketosis on the diet containing 120 g fish meal per kg, this treatment was terminated and the experiment continued for 15 weeks with the groups receiving 0, 40 and 80 g/kg fish meal supplements. During this time average yields of FCM were 23·5, 25·6 and 28-0 kg FCM per day respectively and energy intakes were calculated to be sufficient to meet the requirement for 18 kg FCM per day.It appeared possible to increase milk yield by stimulating fat mobilization through giving undegraded protein supplements to underfed cows in early lactation. However, when an excessive mobilization occurred with a high supplement, and when the animals were yielding 15 to 20 kg FCM more than their metabolizable energy intake was calculated to sustain, some cows became ketotic.


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